Gas-main stopper.



PATRICK GOODMAN, OF NEW YORK, N. Y.

GAS-MAIN STOPPER.

Specification of Letters Patent. Application filed January 27, 1910. Serial No.

Patented May 31, 1910. 540,448.

T all whom it may concern: 7

Be it known that I, PATRICK GOODMAN, a citizen of the United States, and a resident of the city of New York, borough of Manhattan, in the county and State of New ork, have invented a new and Improved Gas-Main Stopper, of which the following is a full, clear, and exact description.

The invention is an improvement in gas main stoppers of the character disclosed in Letters Patent Number 940,458, granted to me November 6, 1909, wherein a collapsible having a diaphragm is adapted to be opening in the side of the expanded therein to out 01f the flow of gas, the frame having handle-bars to extend through the said opening, and having means arranged to force them in opposite directions to lock the stopper in place. I have found in practice that in some intion of the locking means, the finger and eye being adjustable along the length of the handle-bar to accommodate the stopper to the point at which it'is placed in the main, e eye being arranged close to the outer wall of the main when the finger is engaged.

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a side view of a gas main stopper embodying my improvements, the stopper being shown locked in position in the and the main inlongitudinal central of the stopper when collapsed, showing the handle-bars in section; Fig. 3 is a vertical section substantially on the line 33 of Fig. 1,- and Fig. 4 is a fragmentary side view of one of the handle-bars, showing the adjustable sleeve which carries the finger and eye, in section.

The stopper improvements is shown to be the same as that disclosed in Letters Patent Number proper to which I apply my 591,271, granted to me October 5, 1897, and 'n the Letters Patent before referred to, the same embodying in its construction a collapsible spring frame covered by a yielding packing and having a flexible diaon the frame at diametrically opposite points. At these points the frame is provided with pivotally-connected telescoping members 12 and 12 bridging the diaphragm, and pivotally-connected handlebars 13 and 14, each bar being provided with a suitable hand-grip 15. A hook threaded shank slidable through the handgrip 15 of the handle bar 13, connected to the top of the spring frame, the hook being adapted to engage in a ring or eye 17 carried by the handle-bar 14, and having a nut 18 threaded on its shank and arranged to bear on the outer side of the hand-grip, and tending, when tightened, to force the handle-bars in opposite directions.

The construction thus far described is the same as that disclosed in the Letters Patent first referred to, except as to the manner in whlch the eye or ring 17 is carried on the p This eye is intermediate the length of which is constructed with respectively located at the inner and outer ends, the eye 19 receiving a set-screw 21, adj ustably securing a slidable collar 22 to the handle-bar, and the eye receiving the handle-bar l4, and from which the free end of the wire is extended to provide a finger 23, this finger being arranged to engage the inner wall of the gas main adjacent to the opening in the side thereof, through which t e stopper is passed when the hook 16 is caught in the eye 17, and prevent the handle-bar 14 from drawing out of the main preferably made a piece of wire eyes 19 and 20,

with the body of the stopper when the nut 18 is tightened. Thus, the tightening of this nut will exert an inward pressure on the upper portion of the spring frame and lock the same crosswise of the main, with the diaphragm stretched out. By reason of the finger 23 and eye 17 being relatively fixed, the eye will at all times be located closely adjacent to the outer wall of the main when the finger is engaged, and the adjustability of these features, afiorded by the set screw 21 and sleeve 22, accommodates them to the varying positions at which the stopper is placed in the main.

Having thus described my invention, 1

claim as new and desire to secure by Letters Patent:

1. An eXpansible and contractible gas K main stopper adapted to be inserted in an opening in the side of the main, having handle-bars, a projection arranged on one of the handle-bars to engage the inner wall of the main adjacent to the said opening, and means to exert pressure on the other handle-bar to lock the stopper in the main, adapted to be connected to the first-named handle-bar.

2. A gas main stopper having handle-bars pivotally connected at substantially diametrically opposite points, an eye adjustable along the length of one of the handle-bars, and a hook adapted to engage in said eye 1:gnd adjustably carried by the other handle- 3. An expansible and contractible gas main stopper adapted to be inserted in an opening in the side of the main, having handle-bars, a projection adjustable on one of j the handle-bars and arranged to engage the inner wall of the main adjacent to the said opening, and means to exert a pressure on the other handle-bar, detachably connectj ed to the first-named handle-bar.

4. An expansible and contractible gas main stopper adapted to be passed through an opening in the side of the main and exl panded in the main to cut off the flow of Y gas, having handle-bars connected to the upper and lower portions thereof, a finger carried by the handle connected to the lower portion of the stopper and arranged to engage the inner wall of the main adjacent to thesaid opening, an eye carried by the hanl dle-bar having the finger, and a hook adapted to be engaged within the eye and adjustably connected to the other handle-bar.

5. An expansible and contractible gas main stopper adapted to be inserted in an opening in the side of the main and having handle-bars pivotally connected to the upper and lower portions thereof, a member adjustable along the length of one of the handlebars connected to the lower portion of the stopper, having a finger gage the inner wall of the main adjacent to said opening and provided with an eye located to stand at the outer wall of the main when the finger is engaged, and a hook adapted to engage in the eye, having means for forcing the other handle-bar inwardly.

6. An expansible and contractible gas main stopper adapted to be inserted through an opening in the side of the main and having handle-bars respectively connected to the upper and lower portions thereof, means to simultaneously force the handle-bars in opposite directions to lock the stopper in the main, and means carried by the handle bar connected to the lower portion of the stopper, arranged to engage the wall of the main adjacent to the opening and prevent the handlebar from being drawn outwardly under the action of the firstmentioned means.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

PATRICK GOODMAN.

Vitnesses M. L. MoMAnUs, M. F. DUNN.

arranged to en- 

